The Wakhan Corridor is located in the extreme north-east of Afghanistan. Until 1883, the Wakhan included the whole valley of the Panj River and the Pamir River. As well as the upper flow of the Panj River known as the Wakhan River. An 1883 agreement between UK and Russia split the Wakhan. By delimiting spheres of influence for the two countries at the Panj and Pamir rivers. Since then, the name Wakhan is now generally used to refer to the Afghan area south of the rivers. Northern part of the historic Wakhan is now part of the Badakhshan in Tajikistan. Western part of the Wakhan, between Ishkashim and Qila-e Panja, is known as Lower Wakhan. Which includes the valley of the Panj River.
The valleys of the Wakhan River, the Pamir River and their tributaries, and the terrain between, are known as Upper Wakhan. The eastern extremity of Upper Wakhan is known as the Pamir Knot. Area where the Himalayas, Tian Shan, Karakoram, Kunlun, and Hindu Kush ranges meet. West of the Pamir Knot is the Little Pamir, a broad U-shaped grassy valley 100 km long and 10 km wide. which contains Chaqmaqtin Lake, the headwaters of the Aksu River. At the eastern end of the Little Pamir is the Tegermansu Valley.
The Great Pamir 60 km long valley south of Zorkol lake. Drained by the Pamir River, lies to the northwest of the Little Pamir. Wakhan River flows through the corridor from the east to Qila-e Panja. Where it joins the Pamir River to become the Panj River which then forms border. In the south the corridor is bordered by the high mountains of the Hindu Kush. Crossed by the Broghol pass, the Irshad Pass and the disused Dilisang Passto Pakistan.
